I love being able to look at the stats for my tags and compare them with other tags, but I would love to be able to compare them with my normal time-based stats as well. I have a tag for all of the books that I'm attempting to use with challenges this year; how do the genres of this collection compare with last year's books? my overall total of books? I have another tag for a book club that I'm in and I'd love to also be able to compare that with my overall stats for the year. Just another way to slice the data! :)